<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>使用私钥加密数据</title>
<link media="all" rel="stylesheet" type="text/css" href="styles/03e73060321a0a848018724a6c83de7f-theme-base.css" />
<link media="all" rel="stylesheet" type="text/css" href="styles/03e73060321a0a848018724a6c83de7f-theme-medium.css" />

 </head>
 <body class="docs"><div class="navbar navbar-fixed-top">
  <div class="navbar-inner clearfix">
    <ul class="nav" style="width: 100%">
      <li style="float: left;"><a href="function.openssl-private-decrypt.html">« openssl_private_decrypt</a></li>
      <li style="float: right;"><a href="function.openssl-public-decrypt.html">openssl_public_decrypt »</a></li>
    </ul>
  </div>
</div>
<div id="breadcrumbs" class="clearfix">
  <ul class="breadcrumbs-container">
    <li><a href="index.html">PHP Manual</a></li>
    <li><a href="ref.openssl.html">OpenSSL 函数</a></li>
    <li>使用私钥加密数据</li>
  </ul>
</div>
<div id="layout">
  <div id="layout-content"><div id="function.openssl-private-encrypt" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">openssl_private_encrypt</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.6, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">openssl_private_encrypt</span> &mdash; <span class="dc-title">使用私钥加密数据</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.openssl-private-encrypt-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>openssl_private_encrypt</strong></span>(<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$crypted</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">$key</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type">int</span> <code class="parameter">$padding</code><span class="initializer"> = OPENSSL_PKCS1_PADDING</span></span><br>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>openssl_private_encrypt()</strong></span> 使用私钥 <code class="parameter">key</code> 加密数据 <code class="parameter">data</code>
   并且将结果保存至变量 <code class="parameter">crypted</code>中。加密后的数据可以通过<span class="function"><a href="function.openssl-public-decrypt.html" class="function">openssl_public_decrypt()</a></span>函数来解密。 
  </p>
  <p class="para">
   该函数用来签名数据（或者哈希）让别人相信数据并不是其他人写的。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.openssl-private-encrypt-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">data</code></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">crypted</code></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">key</code></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">padding</code></dt>

     <dd>

      <p class="para">
       <code class="parameter">padding</code> 可以是如下之一：
       <strong><code>OPENSSL_PKCS1_PADDING</code></strong>,
       <strong><code>OPENSSL_NO_PADDING</code></strong>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.openssl-private-encrypt-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.openssl-private-encrypt-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.openssl-public-encrypt.html" class="function" rel="rdfs-seeAlso">openssl_public_encrypt()</a> - 使用公钥加密数据</span></li>
    <li class="member"><span class="function"><a href="function.openssl-public-decrypt.html" class="function" rel="rdfs-seeAlso">openssl_public_decrypt()</a> - 使用公钥解密数据</span></li>
   </ul>
  </p>
 </div>


</div></div></div></body></html>